Patents by Inventor William C. Howrie

William C. Howrie has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5862902
    Abstract: An electromagnetic friction clutch assembly includes an input gear which is supported directly on an output shaft for rotation relative thereto. The input gear is formed from a self-lubricating molded thermoplastic material, or a self-lubricating metallic material. An armature is rotatably supported on a tubular extension formed on the input gear. The armature is connected to the input gear for rotation therewith and for relative axial movement. A rotor plate is secured to the output shaft for rotation therewith. The armature is axially movable between an engaged position, wherein it frictionally engages the rotor disc, so as to cause the output shaft to be rotatably driven by the input gear, and a disengaged position, wherein it does not frictionally engage the rotor disc. A non-rotatable electromagnet is supported on the output shaft for selectively attracting the armature toward the rotor disc so as to engage the electromagnetic friction clutch assembly.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: January 26, 1999
    Assignee: Dana Corporation
    Inventor: William C. Howrie